JPS587318B2 - Kiwazoribatsuki Denki Razor - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electric shaver with sharp edges.

Conventionally, the electric razor with sharp blades was produced in 1974.
No. 270 is known.

However, in the electric shaver with razor blades shown in Japanese Patent Publication No. 47-270, the connecting piece 31 is pivotally supported on the motor driven member 30 as shown in FIG. Loosely fit the protrusion 34 of the connecting piece 31 into the connecting piece 31, and operate the operating member 32 to engage the pin 37 of the shaving blade 36 in the narrow recess 35 of the connecting piece 31 to drive the shaving blade 36. Engage the pin 39 of the sled blade 38 to remove the sled blade 3
It was driving the 8.

However, in this conventional example, since the connecting piece 31 is rotated by moving the operating member 32 up and down, the operating direction of the operating member 32 is perpendicular to the vibration direction of the driving member 30. Therefore, a vertical space is required on the main body side for the sliding movement of the operating member 32, and the main body shape becomes large. In addition, since the protrusion 34 slides within the slit 33, a gap is required between the slit 33 and the protrusion 34, which may cause the connection piece 31 to wobble or become loose during vibration transmission. There was a risk that 31 would be dancing.

The present invention was invented in view of the above points, and its purpose is to set the operation direction of the operation handle in the horizontal direction in an electric shaver with sharp blades, so that it can be carried out in a spatially narrow place. Therefore, the structure is simple, and by pressing the sub-driver against the drive body with the sub-driver spring, when the suppression piece of the operation lever is not in contact with the operation lever abutting part of the sub-driver, the sub-driver is pressed against the drive body by the sub-driver spring. The driving body does not wobble when driven, and when the suppression piece of the operating lever is brought into contact with the operating lever abutting portion of the sub-driver, the sub-driver does not move and slides into contact with the sub-driver. By pivoting the auxiliary drive body to the drive body that stably transmits vibrations to the joint, the drive part can be made into blocks, making assembly easy and providing an electric shaver with serrated blades that prevents malfunction of the operating handle. There is something to do.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which 1 indicates a blade frame;
2 is an outer blade, 3 is a shaving blade, 4 is a presser, 5 is a drive body for reciprocating the shaving blade, 6 is a hair holder, 7 is a comb blade, 8 is a sharp blade, 9 is a comb base, 10 is a sharp blade pressing spring, 11 is a spring seat plate, 12 is a casing, 13
is a bearing, 14 is a shaft, 15 is a shaft holding frame, 16 is a vibration-proof rubber,
17 is a base, 18 is an operating handle, 19 is an operating lever,
20 is an auxiliary drive body, 21 is a shaft for the auxiliary drive body, and 22 is a joint.

The edge cutting blade selection drive section is constructed as shown in FIG.

That is, a sub-driver 20 is pivotally supported on the drive body 5 by a sub-driver shaft 21 so as to be freely pivotable in the vertical direction.
0 is pressed against the vertical surface 5a of the driving body 5 by the sub-driving body spring 23.

The hole 20c of the sub-driver 20 and the sub-driver shaft 21 are machined to exact dimensions so that the sub-driver 20 can freely rotate around the sub-driver shaft 21 and will not wobble.

An operating lever abutting part 20b with a medium-high center is formed in the front part of the sub-driver 20, and when the operating lever 19 is slid by the operating handle 18, the operating lever abutting part 20b
b is pressed downward by the pressing piece 19a of the operating lever 19.

The operating handle 18 and the operating lever 19 are arranged such that the engaging protrusion 18a of the operating handle 18 is connected to the engaging hole 19 of the operating lever 19.
They are connected by press-fitting into b.

A substantially prismatic vibration transmission section 2 formed on the upper part of the sub-driving body 20
0a is loosely fitted into the loose fitting notch 22a of the joint 22 when the driving body 20 is in contact with the vertical surface 5a of the driving body 5, and the sub-driving body 20 is pressed downward by the operating lever 19. In this state, it fits into the engagement recess 22b of the joint 22.

The edge cutting blade 8 to which the joint 22 is attached is adapted to move in the same direction as the drive body 5.

When the pressing piece 19a of the operating lever 19 is not in contact with the operating lever abutting portion 20b of the sub-driver 20, the vibration transmitting portion 20a of the sub-driver 20 is moved to the joint 22 as shown in FIG.
Even if the driver 5 vibrates in the loose fit notch 22a, the vibration is not transmitted to the joint 22, and the edge cutting blade 8 does not slide.

Next, the operating handle 18, which is an engagement operation means for engaging the sub-driver 20 with the sharpening blade 8, is slid, and the pressing piece 19a of the operating lever 19 brings the operating lever of the sub-driver 20 into contact. When the portion 20b is pressed downward and the auxiliary driver 20 is rotated against the elastic force of the auxiliary driver spring 23, the vibration transmitting portion 20a moves into the engagement recess of the joint 22 as shown in FIG. 22b
The vibration of the driver 5 is transmitted to the sub-driver 20 and the joint 2.
2 to the edge cutting blade 8, and the edge cutting can be performed by sliding the edge cutting blade 8.

4 and 5 show the relationship between the pressing piece 19a of the operating lever and the operating lever abutting portion 20b of the connecting piece when the sharpening blade 8 is not operating and when it is operating, respectively. is the distance between the suppressing piece 19a and the operating lever abutting part 20b, b is the amplitude of the tip of the operating lever abutting part 20b, C is the contact distance between the operating lever abutting part 20b and the pressing piece 19a, and d is the rotation of the driver 5 The distance from center 0 to the tip of vibration transmitting part 20a, e is the distance from rotation center 0 to the lower end of pressing piece 19a, and each distance b, c, d, e is e/d = c/b<1/
2, and in this example b≒2 mm, so c
<1 mm.

This c<1 mm is small compared to the sliding distance of the sharpening blade 8 and the amplitude of the shaving blade 3, so the influence of friction between the suppressing piece 19a and the operating lever abutting part 20b depends on material selection and side effects. By adjusting the spring force of the driver spring 23, it is possible to make it almost negligible.

In the present invention, the auxiliary drive body is rotatably supported on the drive body for reciprocating the shaving blade, and the vibration transmitting part is formed in the upper part of the auxiliary drive body, and the central part is high in the front part. A joint is provided at the base of the sharpening blade that moves in the same direction as the drive body, and when the vibration transmission part is loosely fitted into the joint, vibration is transmitted to the sharpening blade. In addition to providing a loose fit notch that does not transmit vibration, an engagement recess is provided at the back of the loose fit notch to transmit vibration to the edge cutting blade when the vibration transmission part is engaged, and the vibration transmission part is inserted into the engagement recess. A spring for the auxiliary drive body is provided to apply a spring force in the direction of movement from the side to the loose fit notch, an operation lever is provided on the operation handle that is movable laterally, and the operation lever contacts the operation lever abutting part of the auxiliary drive body. A suppressing piece is provided so that the vibration transmitting part can be engaged with the engagement recess of the joint by pressing the operating lever contact part against the elastic force of the sub-driver spring when it comes into contact. Therefore, the shaving blade and the shaving blade are arranged parallel to each other, and the operating direction of the operating handle is also parallel, which not only makes it possible to perform the operation in a narrow space, but also has a simple structure. Since it is only necessary to provide a joint on the scraping blade, the shape of the scraping blade is simple and has excellent workability and performance.Furthermore, the vibration transmission part of the sub-driver is connected to the loose fit notch of the joint and the engagement recess. Since the engagement and disengagement for vibration transmission are carried out by moving between the two, engagement and disengagement for vibration transmission can be carried out extremely smoothly.

Moreover, since the sub-driver is pressed against the drive body by the sub-driver spring, when the pressing piece of the pressing lever of the operation lever is not in contact with the contact part of the operation lever of the sub-driver, the sub-drive When the body is not shaken by the drive, and the control lever's suppression piece is in contact with the control lever abutting part of the sub-driver. In this case, the auxiliary drive body does not move stiffly, and can slide into contact with the auxiliary drive body to perform stable vibration transmission to the joint.

Furthermore, the auxiliary drive body is pivotally supported on the drive body, and the drive part can be made into a block. Therefore, the auxiliary drive body can be incorporated at the same time by simply pivoting and attaching the drive body, making it easy to assemble. It is.

In addition, a spring for the auxiliary drive body is provided that applies a spring force in the direction of moving the vibration transmission part from the engagement recess to the loose fit notch, and an operation lever is provided on the operation handle that can be moved laterally. A pressing piece is provided to press the operating lever abutting part of the body against the elastic force of the auxiliary drive spring to engage the vibration transmitting part with the engagement recess of the joint. Not only can you transmit the drive to the edge cutting blade by operating it, but also transmit and cut the drive to the edge cutting blade when the sub-driver is not engaged with the edge cutting blade (in other words, Even if your finger accidentally touches the operating handle, the force must not exceed the force against the auxiliary drive spring (
In other words, if you do not operate the operating handle with strong force with the will to drive the sharpening blade, the sub-driver will not engage with the sharpening blade, and if you do not drive the sharpening blade, it will inadvertently snap. There is no risk of driving the cutting blade.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is an enlarged exploded perspective view of the cutting blade drive section of the same as above, Fig. 3 is a cross-sectional view of the same as above during operation, Fig. 4 and Fig. 5 6 is a cross-sectional view of a conventional example, in which 3 is a razor blade, 5 is a driver, 8 is a sharp blade, and 23 is a cross-sectional view of a conventional example. indicates a spring for the auxiliary driver.

Claims (1)

[Claims] 1 A sub-driver is pivotably supported on a drive body for reciprocating the shaving blade, and a vibration transmitting part is formed on the upper part of the sub-driver, and a chevron-shaped operating lever with a raised central part is provided at the front. A joint is provided at the base of the side cutting blade that forms an abutting part and operates in the same direction as the drive body, and a loose fit notch does not transmit vibration to the side cutting blade when the vibration transmitting part is loosely fitted into the joint. At the same time, an engagement recess is provided at the back of the loose fit notch to transmit vibration to the sharpening blade when the vibration transmitting part is engaged, and the vibration transmitting part is transferred from the engaging recess to the loose fit notch. A spring for the auxiliary drive body is provided that applies a spring force in the direction of movement to bring the auxiliary drive body into elastic contact with the drive body, an operation lever is provided on the operation handle that can be moved laterally, and an operation lever for the auxiliary drive body is provided on the operation lever. Suppression that can freely contact the contact portion and, when in contact, presses the operation lever contact portion against the elastic force of the sub-driver spring to engage the vibration transmission portion with the engagement recess of the joint. An electric razor with sharp blades.